Honestly, it's a simple as never encountering one I could try to see if it's comfortable having a piece of wire wrapped around my noggin. All the ones in stores are tethered to their little displays.

FWIW Tikka headbands are really comfortable and can be non-destructively removed to toss in the wash. The elastic can lose some of its oomph after several years, though.

Cheers,
_________________________
--Rick